Vacuum cleaner



FIG. 1 is a front view of a vacuum cleaner showing our new design;

FIG. 2 is a back view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof; and,

FIG. 5 is a top view thereof. 

CLAIM We claim the ornamental design for a vacuum cleaner, as shown and described. 